Frictionless IoT checkout rollout from pilot to multi-country operations.
Adrian Topala
Senior Engineer & Architect who ships.
Close to the problem. Close to the code.
20+ years delivering mission-critical systems across cloud, web, mobile, IoT, and desktop — for startups moving at speed and Fortune 500 companies that can't afford to fail. I design lean, pragmatic solutions in high-trust, fast-paced environments with ambiguous and competing priorities. I care about clarity, velocity, and building teams that ship.
How I Engage
Fractional CTO / Technical Director
Own your technical direction without a full-time hire. I set the architecture, build the delivery model, align the team, and represent engineering at the leadership table — then hand it off when you're ready.
Best for: early-stage startups, scale-ups without a CTO, or companies navigating a technical inflection point.
Tech Lead Embed
I join your team or programme as the senior technical lead — hands-on when needed, driving delivery end-to-end. Architecture, cross-team coordination, stakeholder alignment, and shipping. No ramp-up theatre.
Best for: complex programmes that need a senior lead who can both design the system and get it across the line.
Senior IC / Principal Engineer
I write production code, own hard problems, and operate without hand-holding. Full-stack, cloud, IoT, AI — across the stack and into the infrastructure. Available for the right scope and rate.
Best for: teams that need a senior engineer who ships, not one who needs managing.
Stack & Skills
Full-spectrum technical expertise across modern engineering disciplines
AI-Augmented Engineering Specialist
Pioneering the integration of LLMs across the full software delivery lifecycle: spec-driven development with AI-assisted authoring, code generation within architectural boundaries, AI-generated test criteria, and validation feedback embedded into CI/CD — all while maintaining human oversight and production-grade quality.
Frontend & Full-Stack
Backend & Data
Cloud & DevOps
AI & LLM Integration
Testing, Quality & Security
Architecture & Delivery
Leadership & Collaboration
Industries
Selected Outcomes
Proof-first snapshot of measurable delivery impact across recent engagements.
Core manufacturing marketplace workflow rebuilt and stabilized under live load.
Enterprise BI transformation replacing manual Excel-heavy reporting flow.
Award-winning AI retail platform delivered with cross-team integration governance.
Risk controls and OTA pipeline modernization for IoT self-scanning carts.
Co-founded and scaled engineering center with delivery standards and mentoring.
Work Experience
Architected and led delivery of a frictionless, computer-vision-based IoT checkout platform, initially piloted in a single store and progressively scaled to multiple stores and countries. Delivered an award-winning AI-powered retail solution (RETA Award 2023 — Best AI & Robotics), reducing checkout time by 90%+.
Built a production-grade virtual store and customer-journey simulator enabling any team member or executive to simulate real customer behaviour, providing continuous visibility into system maturity. Orchestrated cross-functional delivery across backend, frontend, mobile, IoT, UX, BI, QA, and external vendors by establishing clear integration contracts, release cadences, and rollout readiness criteria.
Built Vexnor, an open-source TypeScript library for type-safe SQL — generates TypeScript types from database schemas enabling compile-time safety on raw SQL queries without ORM abstractions. Supports PostgreSQL, MS SQL Server, and SQLite, with adaptors for Sequelize, Drizzle, TypeORM, and Prisma.
Built NIFAM — interactive web UI for the decisionSupport R package (FastAPI · Vue 3 · TypeScript · R/Plumber), using LLMs for model explanation, specification clarification, and user-facing guidance via RAG while retaining deterministic execution.
Designed and implemented a real-time tactical puzzle game in PhaserJS with procedural AI levels.
Built a frictionless IoT self-checkout concept prototype end-to-end as a personal R&D initiative (kiosk client, backend services, OTA pipelines, and highly configurable workflows). Researched and qualified international kiosk hardware suppliers, established importer readiness, and validated market interest through demos/pitches; the venture did not proceed due to solo execution constraints and no anchor enterprise fleet client.
Stabilised HelloCoins.com crypto exchange with a 6-engineer remote team. Set up Node.js · React · MongoDB stack, CI/CD pipelines, and agile delivery. Facilitated collaboration across engineering functions and aligned delivery milestones with product and business expectations.
Initiated modernisation by rebuilding the core RFQ workflow as a lean MVP — the system's most complex and business-critical feature — after earlier freelance attempts failed. Re-architected Europe's largest manufacturing sourcing platform with micro-frontends (TypeScript, React, Redux, Material-UI) for better modularity and team autonomy.
Reduced RFQ processing time by 20×. Collaborated closely with CTO/COO-level stakeholders, aligning technical direction with business priorities and ensuring consistent delivery across engineering and product teams.
Architected a private pricing platform turning brand communities into micro-influencers. Integrated Shopify API and headless CMS to automate product onboarding, pricing sync, and order management.
Delivered autoscaling live/VOD streaming platforms on GCP with Node.js micro-services and Wowza servers for Limelight Music (US) and Digita Oy (Finland).
Led design and development of a fraud-detection and customer-risk system for IoT self-scanning carts. Coordinated a cross-functional Agile team across business, UX, and engineering.
Raised review rate for active customers from 18% to 94% in under 3 months. Standardised release and deployment management and implemented an OTA (over-the-air) IoT deployment system. Delivered on Azure · Node.js · React · .NET Core · C# · MongoDB · SQL Server.
Led multi-division data engineering and BI transformation for enterprise risk reporting, migrating complex Excel-based workflows into scalable, version-controlled QlikView dashboards.
Automated Excel-to-QlikView logic migration, improving data integration speed by 6× and enabling cross-division analytics. Implemented parallel Kanban pipelines and DevOps processes to enhance efficiency in a complex, multi-division environment.
Designed and built an IoT solution integrating commodity GSM/Android thermal printers with a centralised ERP for a chain of cafes in Melbourne — connecting order taking, kitchen, and delivery operations end-to-end. Sole architect, developer, and delivery owner.
Architected and developed a consumer-facing SaaS extension for the Dracoon secure file-sharing ecosystem, enabling simplified document sharing via dynamically generated QR codes.
Co-founded a stealth-mode security start-up in Munich.
Architected and developed the high-performance .NET/C#/ASP.NET API layer that integrated iPad and Windows desktop clients with Brainloop's core services, driving a 30% increase in customer acquisition upon market release. Delivered Client SDKs (.NET, Java, iOS/Xamarin) with libraries, code samples, and documentation.
Built a chatbot for automating sales conversions of an online marketing business. Sole architect, developer, and delivery owner.
Directed technical delivery and architecture of enterprise-scale nearshoring projects for major Dutch clients (Hyundai, Group M, Boskalis) using .NET/C#/ASP.NET.
Managed project budgets up to €2M and led cross-functional teams of 10+ engineers. Core team member that founded the Iasi R&D centre, growing it from 4 to 30 engineers.
For Boskalis, architected and led development of SOPRO — a complex SOA web system for managing soil processing activities worldwide, integrating SCADA, BizTalk orchestration, Active Directory, and SQL Server Reporting Services. Also delivered SOFLO — a soil flow registration and dynamic reporting system for Dutch government compliance. Both projects followed PRINCE2 with iterative Scrum, TDD, and CI on Team Foundation Server.
Built an eCommerce solution for a handmade jewellery start-up. Sole architect, developer, and delivery owner.
Built a classroom management system for an education services start-up. Sole architect, developer, and delivery owner.
Lead developer role delivering software solutions for local and international clients.
Built a VoIP PIN sales management solution for a small telecom services provider. Sole architect, developer, and delivery owner.
Early career software developer role.
Work With Me
Tell me what you are building, where you are blocked, and your timeline.
Current availability: 1 new engagement slot for Q3 2026.
Most teams contact me when delivery is blocked, architecture is drifting, or a critical initiative needs to reach production fast.